Thermostatic control device for circulating systems



Dec. 14 19% J. FLETCHER THERMOSTATIC CONTROL DEVICE FOR CLRLTIEG SYSTEMS original Filed July 24, y1922 lli lli)

fitti titl l'dmllllil lllliTiTCHlllR, 0l? DETBGIT, MICHGAN.

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mellor-rler; allied lair ce,

The invention relates to theruiostatiejcontrol devices for circulating systems 1e adapted particularly lor use in regulating the tlow of the Water for cooling an. internal combustion engine. lllne et the objects of the inveni'z-ion is the provision of a simple control device which' comprises but few parte and may loe readily installed. @ther objects are to provide a device in which a thermostat lione-tions as avalvc and is free- ,ly movable; and to provides device in which the thermostat is under tension to remain stationary until the temperature of the Water has reached a predetermined degree. Further objects of the invention reside in the novel lectures of construction and combinations and arrangements of parts as more lully hereinafter' set forth.

lin' the drawings: I

Figure l is a. plan view of a portion ot' a motor vehicle including the internal combustion engine and radiator with my thermoistatic control device applied;

Figure 2 is a longitudinal section through the thermostatic control device;

.Figure 3 is a cross section on the line 3-3 oit Figure 2.

As shown in the present instance., .my thermostatic control device is applied to a motor vehicle having the water cooled internal combustion engine l and the radiator 2, this device forming part of the upper eon nection between the engine and radiator lor circulation of the cooling Water.,

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The casing Vof the therinostatic control device comprises'tl'ie cylindrical anges 3 and a forming the inlet and outlet portions of the passage respectively and the intermediate enlarged portion 5 havingr parallel ends li and '7. 8 is a transverse plate Within the easing and positionedmidyvay oi the inlet and outlet portions ot the" passage by the of pins 9 and V1 0-secured to and ending;- transversely ol the 'plate in opposite directions and engaging the end Walls 7 and li respectively 'l1 is the thermostat consist- .mpg oi an annular bimetallic valve havingl overlapping ends which surrounds the series ci pinslO and is located between lthe end G oi the enlarged portion of the casing and the radially extending pins 'l2 in the plane of thc plate il and extending" therefrom to the periphery of the enlarged portion .5 ol the rhisingrV f 'lhe thermostatic valve ll in normal position shown by the lully lines in Figure 2 sei-iai nu. snaai. nenewea rune s. ieee.

as well as Figure 3, extends in close proximity to the periphery of the transverse plate 8 so that water entering through the cylindrical flange 3 will have but a restricted passage around the thermostatic valve through the intermediate passage formed between the periphery of the plate and the periphery of the enlarged portion of the vcasing and then through the cylindrical flange 4. However, when the temperature of the entering Water has increased sutilciently, the thermostatic valve expands so that its lower portion occupies a position such as shown by the dotted lines in Figure 2 and permits of the freer passage of the water through the casing. As the temperature of the water increases, thethermostatic valve continues to expand until it lies adjacent to the inner periphery of` the'casing as shown by the dotted lines in Figure 3 when the maximum clearance is provided through the casing for the passage of the water. p

The thcrmostatic valve is preferably placed under tension so that it will remain stationary in its normal or closed position until a predetermined tem erature of water has' been reached, after which, the valve will expand as the temperature of the Water increases.

'From' the above description, it will be readily seen that l have provided a simple compact construction of thermostatic control device in which the thermostat functions as a valve and is freely movable, or in other Words is :free to expand and contract in accordance with temperature changes since it is guided only. Also the thermostatic valve being under tension when in closed or normal position remains stationary until the temperature of the water has reached a predetermined degree, after which the thermoztatic valve expands als the temperature increases. Furtherrnore, my therinostatic control plied owing to the fact that the rubber hose sections 13 and lllmay belorced over the device may be readily ap cylindrical flange 3 and outlet connection of i lthe engine, and cylindrical flange 4 and inlet connection of the radiator respectively, after which they may be secured by suitable clamps. y

What claim as my invention is:

l.. A thermoetatic control deine?! ino' a casing having a passage, wit substantia lv alirmcd inlet and'outlet politieman@ comprise c a thermoslatic valve loosely mounted within said casing and controlling the communication of said portions.

2. A thcrmostatic control device comprising a casing having a passage with inlet and outlet portions and an intermediate portion. and an annular tliermostatic valve loosely mounted within said casing and controlling the comnnmication of one of said first-mentioned portions with said intermediate p ortion. 1

3. A thermostatic control device comprising a casing having a passage with inlet and outlet portions and an annular valve readily responsive to differential temperatures t'or controlling the communication between said portions, said valve in its normal position being under self contained tension to remain stationary until the temperature within said casing reaches a predetermined degree.

4. A thermostatic control device comprising a casing having a passage with inlet and outlet portions, and a loosely mounted annular valve readily responsive to diti'grential temperatures for controlling the communication between said portions` said valve in its normal position being under tension to remain stationary until the temperature within said casing reaches a predetermined levree.

D 5. A thermostatie control device t-omprising a casing having a passage with inlet and outlet portions in substantial alignment, and an annular valve Wit-hin said casing readily responsive to differential temperatures and controlling the communication bet..een said portions.l

6. A thermostatic control device comprising a casing having a passage with inlet and outlet portions in substantial alignment with each other and an intermediate portion, and a freely movable annular thelmostatic valve having its axis substantially parallel to the axes of said inlet and outlet portions. said thermostatic valve controlling the communication between one of said first-mentioned portions and said intermediate portion.

7. A thermostatic control device comprising a casing having a passage with inlet and outlet portions in substantial alignment with each other and an intermediate portion, a. transverse plate extending midway of said intermediate portion, and an annular thermostatic valve cooperating with said plate to control the communication between one of said first-mentioned portions and said intermediate ortion.

8. A tiermostatic control device comprising a casing having cylindrical ianges at its opposite ends, and an intermediate enlarged portion, a plate extending transversely of and midway between the ends of said intermediate portion, the periphery of said plate being spaced from the periphery of said intermediate portion, and an annular thermostatic valve for substantially closing the space between said plate and one of the ends ot' said enlarged portion.

9. In a thermostatic control device, the combination with a casing having a passage with substantially aligned inlet and outlet portions at its opposite ends and an intermediate enlargement, of a-transversely extending plate midway of said portions and having the periphery spaced from the periphery of said enlargement and 'formin therewith an intermediate oortion of sai passage, guides between th'v peripheries of said plate agid'enlargemei and a freely movable annular thermostai c valve between said guides and an end of said enlar ement.

10. In a thermostatic control device, the combination with a casing-having a passage with .substantially aligned inlet and outlet portions at its opposite ends and an intermediate enlargement, of a transversely extending plate midway of and of greater area than the cross sectional area of either of said portions, the periphery of said plate being spaced from the periphery of said enlarge- .ment and forming therewith an intermediate portion ot said passage, transversely extending pins secured to said plate for positioning the same midway of said intermediate portion, laterally extending pins upon said plate extending to the periphery of said enlargement, and a thermostatic valve having overlapping ends surrounding the pins extending transversely of said plate in one direction.

11. A thermostatic control device comprising a casing with a passageway having inlet and outlet portions, and an annular member loosely mounted within said casing and leadily responsive to differential temperatures for controlling the communication. between said portions.

12. A thermostatic control device comprising a casing with a passageway having inlet and out-let portions, and a loosely mounted annular member within said casing adapted to expand or contract circumferentially as the temperature rises or falls for controlling the communication between said portions, said member in its normal position being under self-contained tension to remain stationary until the temperature within said casing reaches a predetermined degree.

In testimony whereof I atlix my signature.

JAMES FLETCHER. 

